DE1054493B - Frequency divider with a flip-flop circuit made up of two transistors coupled back to one another - Google Patents
Frequency divider with a flip-flop circuit made up of two transistors coupled back to one anotherInfo
- Publication number
- DE1054493B DE1054493B DEW21377A DEW0021377A DE1054493B DE 1054493 B DE1054493 B DE 1054493B DE W21377 A DEW21377 A DE W21377A DE W0021377 A DEW0021377 A DE W0021377A DE 1054493 B DE1054493 B DE 1054493B
- Authority
- DE
- Germany
- Prior art keywords
- transistor
- capacitor
- circuit
- flip
- transistors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims description 18
- 239000004020 conductor Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 238000013459 approach Methods 0.000 claims 1
- 230000001934 delay Effects 0.000 claims 1
- 229920006395 saturated elastomer Polymers 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
- H03K23/002—Pulse counters comprising counting chains; Frequency dividers comprising counting chains using semiconductor devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
- H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
- H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
- H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
- H03K3/288—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable using additional transistors in the input circuit
Description
Die Erfindung bezieht sich auf einen mit Transistoren, insbesondere Flächentransistoren, bestückten Frequenzteiler.The invention relates to a device equipped with transistors, in particular flat transistors Frequency divider.
Es ist eine Zählschaltung bekannt, deren einzelne Zählstufen ebenfalls als Frequenzteiler betrachtet werden können. Bei der bekannten Einrichtung besteht eine Zählstufe aus einem einzigen bistabilen Spitzentransistor. Spitzentransistoren sind jedoch gegenüber Flächentransistoren sehr viel empfindlicher und neigen außerdem unter Umständen zur !Instabilität. Ein weiterer Nachteil der bekannten Zählschaltung liegt darin, daß die einzelne Stufe dieser Schaltung nicht mit einer einzigen Vorspannungsquelle auskommt. A counting circuit is known whose individual counting stages are also regarded as frequency dividers can be. In the known device, a counting stage consists of a single bistable tip transistor. Tip transistors are, however, much more sensitive than junction transistors and also tend to! instability under certain circumstances. Another disadvantage of the known counting circuit is that the single stage of this circuit does not need a single bias source.
Es ist auch ein Triggerkreis für eine Zählschaltung bekannt, der wesentlich aus einem rückgekoppelten Transistorverstärker besteht. Ein solcher Triggerkreis neigt naturgemäß auch zur selbsttätigen Schwingungsanfachung. Außerdem benötigt er eine besondere Betriebsspannungsquelle. Eine weiter bekanntgewordene Flip-Flop-Schaltung weist in den Kollektorkreisen zweier Transistoren Induktivitäten auf. Diese Induktivitäten dienen der Versteilerung der Rückflanke von Ausgangsimpulsen des Flip-Flop-Kreises.It is also a trigger circuit for a counting circuit is known, which essentially consists of a feedback Transistor amplifier consists. Such a trigger circuit naturally also has a tendency to generate vibrations automatically. He also needs a special operating voltage source. One that has become more popular The flip-flop circuit has inductances in the collector circuits of two transistors. These inductors serve to steepen the trailing edge of output pulses from the flip-flop circuit.
Die vorliegende Erfindung geht aus von einem Frequenzteiler mit einem Flip-Flop-Kreis aus zwei aufeinander rückgekoppelten Transistoren, beispielsweise Flächentransistoren, und mit einem Transistor-Triggerkreis zur Auslösung des Flip-Flop-Kreises. Gemäß der Erfindung ist dieser Frequenzteiler dadurch gekennzeichnet, daß ein durch einen Schalttransistor entladbarer Kondensator als Triggerkreis für den Flip-Flop-Kreis verwendet wird, daß Flip-Flop-Kreis und Triggerkreis an eine einzige gemeinsame Vorspannungsquelle angeschlossen sind und daß zur eindeutigen Festlegung des Schaltzustandes bei Inbetriebnahme im Kollektorkreis eines der beiden Transistoren des Flip-Flop-Kreises eine Induktivität liegt.The present invention is based on a frequency divider with a flip-flop circuit of two on top of one another feedback transistors, for example junction transistors, and with a transistor trigger circuit to trigger the flip-flop circuit. According to the invention this frequency divider is thereby characterized in that a capacitor which can be discharged by a switching transistor is used as a trigger circuit for the flip-flop circuit is used that flip-flop circuit and trigger circuit to a single common Bias source are connected and that for the clear definition of the switching state Commissioning an inductance in the collector circuit of one of the two transistors of the flip-flop circuit lies.
Ein derartiger Frequenzteiler benötigt, wie aus der später folgenden Beschreibung und der Zeichnung
hervorgeht, nur eine einzige Betriebsspannungsquelle und hat dadurch einen großen Vorzug gegenüber den
bekannten Schaltungen, welche mit Spitzentransistoren bestückt sind. Schaltungen, die mit Elektronenröhren
arbeiten, für die neben der Anoden- und Gittervorspannung auch noch Heizspannungen erforderlich sind,
gegenüber ist der erfindungsgemäße Frequenzteiler noch vorteilhafter. Im Triggerkreis erübrigt sich
eine besondere Schaltung zur Unterdrückung von positiven Triggerimpulsen, da nur Impulse von negativer
Polarität entstehen. Durch das Einfügen einer einzigen Induktivität in den Kollektorkreis eines der
beiden Transistoren wird bei Betriebsbeginn auto-Frequenzteiler mit einem Flip-Flop-Kreis
aus zwei aufeinander rückgekoppelten
TransistorenSuch a frequency divider, as can be seen from the following description and the drawing, requires only a single operating voltage source and therefore has a great advantage over the known circuits which are equipped with tip transistors. Circuits that work with electron tubes, for which heating voltages are required in addition to the anode and grid bias, compared to the frequency divider according to the invention is even more advantageous. A special circuit for suppressing positive trigger pulses is not required in the trigger circuit, since only pulses of negative polarity are generated. By inserting a single inductance into the collector circuit of one of the two transistors, an auto-frequency divider with a flip-flop circuit is created at the start of operation
from two feedback loops
Transistors
Anmelder:
Westinghouse Electric Corporation,
East Pittsburgh, Pa. (V. St. A.)Applicant:
Westinghouse Electric Corporation,
East Pittsburgh, Pa. (V. St. A.)
Vertreter: Dipl.-Ing. A. Essel, Patentanwalt,
München 2, Wittelsbacherplatz 4Representative: Dipl.-Ing. A. Essel, patent attorney,
Munich 2, Wittelsbacherplatz 4
Beanspruchte Priorität:
V, St. v. Amerika vom 22. Juni 1956Claimed priority:
V, St. v. America June 22, 1956
John F. Reuther und Sheldon D. Süliman,
Pittsburgh, Pa. (V. St. Α.),
sind als Erfinder genannt wordenJohn F. Reuther and Sheldon D. Süliman,
Pittsburgh, Pa. (V. St. Α.),
have been named as inventors
matisch ein bestimmter Schaltungszustand hergestellt.a certain circuit state is automatically established.
Die Schaltung nach der Erfindung benötigt also keine besonderen Einstellanschlüsse.The circuit according to the invention therefore does not require any special setting connections.
Bei der Verwirklichung der Erfindung werden in Ubereinstimmung mit einem. Ausführungsbeispiel ein Paar Transistoren gegenseitig so rückgekoppelt, daß ein statischer, bistabiler Multivibrator entsteht. Ein Triggerkreis wird in Verbindung, damit benutzt, um Rechteckimpulse in kurze Triggerimpulse umzuwandeln, die über Richtleiter gleichzeitig den Basiselektroden der Transistoren zugeführt werden, um denjenigen Transistor, der Sättigungsstrom führt, zu blockieren und den Multivibrator in seinen anderen stabilen Zustand zu überführen. Es entsteht so ein Rechteckausgangsimpuls für jeden zweiten Rechteckimpuls, der dem Triggerkreis zugeführt wird.In implementing the invention are in accordance with a. Embodiment a Pair of transistors fed back to one another in such a way that a static, bistable multivibrator is created. A Trigger circuit is used in conjunction with it to convert square-wave pulses into short trigger pulses, which are simultaneously fed to the base electrodes of the transistors via directional conductors to block the transistor that carries the saturation current and the multivibrator in its other to transfer stable state. This creates a square output pulse for every second square pulse, which is fed to the trigger circuit.
Zum besseren Verständnis der Art und des Umfanges der Erfindung dient die folgende ausführliche Beschreibung in Verbindung mit der Zeichnung.In order to better understand the nature and scope of the invention, the following is detailed Description in connection with the drawing.
In der Zeichnung bedeutet die Ziffer 10 allgemein eine 2 :1-Flip-Flop-Schaltung oder einen Frequenzhalbierer, der eine Flip-Flop-Schaltung 12 umfaßt, die abwechselnd von einem stabilen Zustand in den anderen überführt wird mittels eines Triggerkreises 13, welchem ein Rechtecksignal von einem Rechteckwellengenerator 15 zugeführt wird.In the drawing, the numeral 10 generally denotes a 2: 1 flip-flop circuit or a frequency halver which comprises a flip-flop circuit 12 which is alternately transferred from one stable state to the other by means of a trigger circuit 13, which is a Square wave signal from a square wave generator 15 is supplied.
809 789/329809 789/329
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US593260A US2892102A (en) | 1956-06-22 | 1956-06-22 | Frequency halver |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1054493B true DE1054493B (en) | 1959-04-09 |
Family
ID=24374041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEW21377A Pending DE1054493B (en) | 1956-06-22 | 1957-06-21 | Frequency divider with a flip-flop circuit made up of two transistors coupled back to one another |
Country Status (2)
Country | Link |
---|---|
US (1) | US2892102A (en) |
DE (1) | DE1054493B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1222973B (en) * | 1960-11-16 | 1966-08-18 | Sperry Rand Corp | Multi-stage pulse amplifier |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3069558A (en) * | 1957-08-12 | 1962-12-18 | Westinghouse Electric Corp | Frequency sensitive control circuit |
US3021435A (en) * | 1959-01-16 | 1962-02-13 | Philco Corp | Stable output pulse producing system |
US3081437A (en) * | 1959-05-01 | 1963-03-12 | Itt | Converter with inductance means for sweeping charge carriers from base region |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2644897A (en) * | 1952-08-09 | 1953-07-07 | Rca Corp | Transistor ring counter |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2524691A (en) * | 1945-07-27 | 1950-10-03 | Rca Corp | Pulse receiver |
US2611085A (en) * | 1949-12-07 | 1952-09-16 | Electronique & Automatisme Sa | Flip-flop stage control circuits |
US2569345A (en) * | 1950-03-28 | 1951-09-25 | Gen Electric | Transistor multivibrator circuit |
US2681996A (en) * | 1950-09-12 | 1954-06-22 | Bell Telephone Labor Inc | Transistor oscillator |
USB172500I5 (en) * | 1951-09-15 | |||
GB745483A (en) * | 1952-11-13 | 1956-02-29 | Rca Corp | Semi-conductor system |
-
1956
- 1956-06-22 US US593260A patent/US2892102A/en not_active Expired - Lifetime
-
1957
- 1957-06-21 DE DEW21377A patent/DE1054493B/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2644897A (en) * | 1952-08-09 | 1953-07-07 | Rca Corp | Transistor ring counter |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1222973B (en) * | 1960-11-16 | 1966-08-18 | Sperry Rand Corp | Multi-stage pulse amplifier |
Also Published As
Publication number | Publication date |
---|---|
US2892102A (en) | 1959-06-23 |
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